<template>
    <div>
         <div class="search">
          <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音"  >
        </div>
        <div class="search-content" ref="search"
            v-show="keyword">
            <ul >
                <li class="search-item border-bottom" v-for="item of list " :key="item.id"
                    @click="handlecityclick(item.name)"
                >{{item.name}}</li>
                <li class="search-item border-bottom" v-show="hasNoData">没有找到匹配数据</li>
            </ul>
        </div>
    </div>

</template>

<script type="text/javascript">
import Bscroll from 'better-scroll'
export default{
     name: 'CitySearch',
     props: {
        cities: Object
     },
     data (){
        return{
            keyword: '',
            list: [],
            timer: null
        }
     },
     computed: {
        hasNoData (){
            return !this.list.length
        }
     },
     methods: {
        handlecityclick(city){
            //vuex的dispatch到actions
           this.$store.dispatch('changeCity',city)
           //跳转到首页
           this.$router.push('/')
        }
     },
     watch: {
        keyword (){
            if(this.timer){
                clearTimeout(this.timer)
            }
            if(!this.keyword){
                this.list = []
                return ''
            }
            this.timer = setTimeout(() => {
                const result = []
                for (let i in this.cities){
                    this.cities[i].forEach((value) => {
                        if(value.spell.indexOf(this.keyword) > -1  || value.name.indexOf(this.keyword) > -1){
                            result.push(value)
                        }
                    })
                }
                this.list = result
            },100)
        }
     },
     mounted (){
        this.scroll = new Bscroll(this.$refs.search)
     }
 }
</script>
<style lang="stylus" scoped>
@import '~styles/varibles.styl'
    .search
        height: .72rem
        padding: 0 .1rem
        background: $bgColor
        .search-input
            box-sizing:border-box
            width: 100%
            height:.62rem
            padding 0 .1rem
            line-height: .62rem
            text-align: center
            border-radius: .06rem
            color: #666
    .search-content
        z-index: 1
        position: absolute
        top: 1.58rem
        left: 0
        right:0
        bottom: 0
        background: #eee
        .search-item
            line-height: .62rem
            padding-left: .2rem
            background: #fff
            color: #666
</style>